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Hi, Alan:
We use a light coating of 'Joy' household detergent
soap - put on with a dampened pad of Kleenex - it acts as a wetting agent and
the moisture lays as an even, clear sheet that is virtually invisible ojn the
acrylic- since the soap breaks the surface tension that causes the minute
'droplets' to act as a 'fog'.
For you diving-helmet wearers, it's also one of the
few surfactants that I know, that prevents fogging on polycarbonates (Lexan,
etc.)
It's a bit of a knack to get just the right amount
on - but it works like a champ!
Phil
P,S. consider using an in-line scintered filter
before your steady-flo orifice
----- Original Message -----
Sent: Wednesday, August 19, 2009 9:38
PM
Subject: [PSUBS-MAILIST] Clogged O2
orifices
Hi Jay,
In your coments on the "nitrox ambient" you
mentioned the following.
If you use a constant flow
of oxygen, optimally this should be equivalent to your rate of consumption of
O2 and is usually accomplished with an orifice. The problem
is that the size of the orifice is very small and can be clogged easily.
Rebreathers that in the past have used this method have been plagued with
clogged orifices and the Navy had numerous warnings concerning this issue in
their course ?Principles of Navy Diving?.
Does this apply to the medical O2 regulators used in Psubs, they regulate
a constant pressure through a small orifice.
Also Phil if you're out there- Do you use an anti
fogging product on the acrylic of your newt suit. If so what is it
& is it removed regularly & with what.
I don't want to put any product on thats going to affect the
acrylic.
Thanks Alan
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